METHOD OF DESIGNING RAMAN AMPLIFYING OPTICAL FIBER, RAMAN AMPLIFYING OPTICAL FIBER AND RAMAN AMPLIFIER

摘要

PROBLEM TO BE SOLVED: To provide a method of designing Raman amplifying optical fiber, a Raman amplifying optical fiber and a Raman amplifier, having favorable amplification characteristic and noise index in a Raman amplifier for amplifying a signal beam with a desired signal wavelength.;SOLUTION: A system parameter is set, and a refractive index distribution or a structural parameter of the Raman amplifying optical fiber is set to find a Raman gain rate in a desired signal wavelength, a loss coefficient, an effective sectional area, a Rayleigh scattering coefficient, and a loss coefficient and an effective sectional area in an excitation wavelength. A net gain and a noise index in the desired signal wavelength of the Raman amplifying optical fiber are calculated, thereby finding a performance index in the desired signal wavelength to design the Raman amplifying optical fiber.;COPYRIGHT: (C)2009,JPO&INPIT